Mount adapter ring is particularly designed to meet shutterbugs´ different demands toward shooting effect. If you desire to capture wonderful and amazing moments, this Nikon Lens to Pentax PX Optical Glass Lens Mount Adapter Ring Black will be your regretless choice. It allows you to mount almost any gear in corresponding size. Adopting high-class material, it can provide stable and natural shooting conditions. It is very lightweight without adding much weight for your digital camera. You will be satisfied with it. Never hesitate anymore!